Just wait a few months, I told myself. Prices will go down or, better yet, they’ll roll out an even newer, more souped up version of the same thing by Fall.

I was guestimating, but the folks over at DealNews have taken a good hard look at the company’s sales over the last few years to pinpoint exactly when prices start to drop.

Some products are cut just a day after they hit stores and it turns out I was right to hedge my bets and hold off on the new iPad – prices usually drop $40 after just two months.

Says DealNews’s Louis Ramirez: “The first and most important thing you can do to save money on new Apple products is not purchase them from Apple; otherwise, you’ll never see significant deals. Rather, we recommend hitting the authorised resellers for discounts and promotions. As far as how long you should wait, that all depends on what product you’re purchasing. That first deal could come as quickly as a few hours or as slow as a week.”

Check out the graphic below for DealNews’ predictions on the best times to score deals on on MacBook Pros, iPods, iPads, iMacs and more. They go into full detail on where to find the deals in their post here.

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